– Lat/Long: 48.71° N 121.99° W
South Twin Sister
Weather Forecast, United StatesIssued: 3 pm Sat 17 Jan Local TimeUpdates in: hr min sUpdate imminent
Issued: 3 pm Sat 17 Jan Local Time
Updates in:
Update imminent hr min s
Issued: 3 pm Sat 17 Jan Local Time
Updates in:
Update imminent hr min s
3 South Twin Sister Elevations: 3 Forecast Elevations: Days 1–4 Weather SummaryMostly dry. Very mild (max 14°C on Sun morning, min 8°C on Mon night). Wind will be generally light. | Days 5–7 Weather SummaryModerate rain (total 11mm) heaviest on Fri morning, then becoming colder with a dusting of snow on Fri morning. Very mild (max 10°C on Tue afternoon, min 1°C on Fri morning). Wind will be generally light. | ||||||||||||||||
Sat 17 | Sunday 18 | Monday 19 | Tuesday 20 | Wednesday 21 | Thursday 22 | ||||||||||||
PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  | | | | | |  |  |  | | | | | |  |  | |
clear | clear | clear | clear | clear | clear | clear | some clouds | cloudy | some clouds | some clouds | cloudy | cloudy | some clouds | some clouds | light rain | mod. rain | |
km/h | |||||||||||||||||
 |  |  |  |  |  | ||||||||||||
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 0.4 | 6 | |
max °C | 13 | 10 | 14 | 12 | 9 | 13 | 12 | 9 | 11 | 10 | 8 | 10 | 9 | 6 | 4 | 3 | 3 |
min °C | 11 | 9 | 12 | 10 | 9 | 11 | 10 | 8 | 10 | 9 | 8 | 9 | 7 | 3 | 4 | 3 | 2 |
11 | 9 | 12 | 10 | 9 | 11 | 10 | 8 | 10 | 9 | 8 | 9 | 6 | 3 | 3 | 1 | 0 | |
3600 | 3500 | 3350 | 3450 | 3300 | 3200 | 3400 | 3500 | 3350 | 3100 | 3100 | 2850 | 2450 | 1800 | 1100 | 1000 | 1000 | |
Cloud base (m) | 8650 | 9350 | 6800 | 6550 | 6000 | 6750 | 6150 | 5000 | 4500 | 700 | 650 | 550 | |||||
 | — | — | 7:52 | — | — | 7:52 | — | — | 7:50 | — | — | 7:50 | — | — | 7:48 | — | — |
 | 4:42 | — | — | 4:44 | — | — | 4:45 | — | — | 4:46 | — | — | 4:47 | — | — | 4:50 | — |
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South Twin Sister Weather (Days 0-3):
The weather forecast for South Twin Sister is: Mostly dry. Very mild (max 14°C on Sun morning, min 8°C on Mon night). Wind will be generally light.
South Twin Sister Weather (Days 3-6):
Moderate rain (total 11mm) heaviest on Fri morning, then becoming colder with a dusting of snow on Fri morning. Very mild (max 10°C on Tue afternoon, min 1°C on Fri morning). Wind will be generally light.
This table gives the weather forecast for South Twin Sister at the specific elevation of 500 m. Our advanced weather models allow us to provide distinct weather forecasts for several elevations of South Twin Sister. To see the weather forecasts for the other elevations, use the tab navigation above the table. For a wider overview of the weather, consult the Weather Map of Washington.